Binding of ²³⁹Pu and ⁹⁰Sr to organic colloids in soil solutions: evidence from a field experiment.

Détails

ID Serval
serval:BIB_3E2F97B5E7E8
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Binding of ²³⁹Pu and ⁹⁰Sr to organic colloids in soil solutions: evidence from a field experiment.
Périodique
Environmental Science and Technology
Auteur⸱e⸱s
Chawla F., Steinmann P., Loizeau J.L., Hassouna M., Froidevaux P.
ISSN
1520-5851[electronic]
ISSN-L
0013-936X
Statut éditorial
Publié
Date de publication
2010
Volume
44
Numéro
22
Pages
8509-8514
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Résumé
Colloidal transport has been shown to enhance the migration of plutonium in groundwater downstream from contaminated sites, but little is known about the adsorption of ⁹⁰Sr and plutonium onto colloids in the soil solution of natural soils. We sampled soil solutions using suction cups, and separated colloids using ultrafiltration to determine the distribution of ²³⁹Pu and ⁹⁰Sr between the truly dissolved fraction and the colloidal fraction of the solutions of three Alpine soils contaminated only by global fallout from the nuclear weapon tests. Plutonium was essentially found in the colloidal fraction (>80%) and probably associated with organic matter. A significant amount of colloidal ⁹⁰Sr was detected in organic-rich soil solutions. Our results suggest that binding to organic colloids in the soil solutions plays a key role with respect to the mobility of plutonium in natural alpine soils and, to a lesser extent, to the mobility of ⁹⁰Sr.
Mots-clé
Adsorption, Calcium/analysis, Carbon/analysis, Colloids/chemistry, Iron/analysis, Plutonium/chemistry, Radiation Monitoring, Silicon/analysis, Soil/chemistry, Soil Pollutants, Radioactive/chemistry, Strontium Radioisotopes/chemistry, Ultrafiltration, Water Pollutants, Radioactive/chemistry
Pubmed
Web of science
Création de la notice
18/03/2011 9:46
Dernière modification de la notice
20/08/2019 13:34
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